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b6cdc042af
Refreshed all patches. The patch hack-4.19/550-loop-better-discard-for-block-devices.patch was replaced with an new version of the patch from: https://lore.kernel.org/patchwork/patch/1153625/ https://lore.kernel.org/patchwork/patch/1153626/ Compile-tested on: ipq40xx, lantiq Runtime-tested on: ipq40xx, lantiq Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
From 83f0a8986ae42e33bc16acda0451dce2cf4dfb55 Mon Sep 17 00:00:00 2001
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From: Marcel Holtmann <marcel@holtmann.org>
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Date: Wed, 22 May 2019 09:05:40 +0200
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Subject: [PATCH] Bluetooth: Check key sizes only when Secure Simple
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Pairing is enabled
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The encryption is only mandatory to be enforced when both sides are using
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Secure Simple Pairing and this means the key size check makes only sense
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in that case.
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On legacy Bluetooth 2.0 and earlier devices like mice the encryption was
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optional and thus causing an issue if the key size check is not bound to
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using Secure Simple Pairing.
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Fixes: d5bb334a8e17 ("Bluetooth: Align minimum encryption key size for LE and BR/EDR connections")
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Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Cc: stable@vger.kernel.org
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---
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net/bluetooth/hci_conn.c | 9 +++++++--
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1 file changed, 7 insertions(+), 2 deletions(-)
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--- a/net/bluetooth/hci_conn.c
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+++ b/net/bluetooth/hci_conn.c
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@@ -1280,8 +1280,13 @@ int hci_conn_check_link_mode(struct hci_
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return 0;
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}
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- if (hci_conn_ssp_enabled(conn) &&
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- !test_bit(HCI_CONN_ENCRYPT, &conn->flags))
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+ /* If Secure Simple Pairing is not enabled, then legacy connection
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+ * setup is used and no encryption or key sizes can be enforced.
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+ */
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+ if (!hci_conn_ssp_enabled(conn))
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+ return 1;
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+
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+ if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
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return 0;
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return 1;
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